[periclesgsilva]

Hello guys!
Need some help to instal a "tachometer" cable to my Vapor. Problem: i have the TT with the rpm option, but the old owner of the trail tech unit lost the cable.
Can i make a new cable? To read the RPM signal? I have a conector from a old speedometer cable. The tachometer cable in the TT unit have wires. One black and one red. So, if i put the connector, need to put 2 wires. One black and one red. The red one to the coil and the black in the ground?
Thanks!

PS: Just to inform, i don't have the original cable. So i will try to make one. hard to find the cable here in Brazil.